When you enhance the T.H.R.E.A.T. Room accessed via a portal in the Abbey's Yard, you gain the ability to modify its training missions. Instead of always fighting against soulless enemies for three turns with a single hero, you'll be able to select up to three heroes and jump into randomized battles against Hydra, Soulless, Vampyres, or Lilin enemies you've already encountered. Furthermore, a new option to set the difficulty level of the enemies you face will become available, affording you an opportunity to earn extra XP against more formidable foes.

If you upgrade the Enhanced T.H.R.E.A.T. Room, still more options to customize the training missions are unlocked. These include choosing which of the four enemy types to fight against, adding a Fallen or Villain you've already faced, and selecting one of three difficulty settings for the mission. As with the regular T.H.R.E.A.T. Room, heroes can visit once each day, gaining experience until they reach the same level as their highest-level teammate.

This Abbey upgrade is part of the "Blood Storm" DLC, which also adds Storm to the Midnight Suns roster. This DLC can be purchased individually or as part of the Marvel's Midnight Suns Season Pass (a copy of Marvel's Midnight Suns is also required to play). Storm content is unlocked via gameplay.